Methods and systems for coating metal substrates are provided. The methods and systems include sequential application of low flow and high flow powder coatings followed by a single heating step to provide a cured coating. The methods and systems include a marker that allows coating uniformity to be monitored and assessed during application. The described methods provide coatings with optimal surface smoothness and edge coverage.

A method of manufacture for an improved composition for melt-bonding road marking compound is disclosed. Comprising preparing a PET component from pulverized recycled plastic. combining the PET component, a pigment component, a filler component, a silica component and a binder component to form a road marking compound. melting the road marking compound form the melt-bonding road marking compound. selecting an amount of the PET component to maximize PET in the melt-bonding road marking compound while ensuring the melt-bonding road marking compound remains liquid for application to a road surface. The PET component comprises glass beads, is substantially clear, and substantially spherical. The PET component comprises glass beads. The method of manufacture comprises optimizing a bead diameter of the PET component to ensure the melt-bonding road marking compound can flow through screens and nozzles in a typical road paint application equipment.

A method of manufacture for an improved composition for melt-bonding road marking compound is disclosed. Comprising preparing a PET component from pulverized recycled plastic. combining the PET component, a pigment component, a filler component, a silica component and a binder component to form a road marking compound. melting the road marking compound form the melt-bonding road marking compound. selecting an amount of the PET component to maximize PET in the melt-bonding road marking compound while ensuring the melt-bonding road marking compound remains liquid for application to a road surface. The PET component comprises glass beads, is substantially clear, and substantially spherical. The PET component comprises glass beads. The method of manufacture comprises optimizing a bead diameter of the PET component to ensure the melt-bonding road marking compound can flow through screens and nozzles in a typical road paint application equipment.

A branched carboxylic acid functional polyester resin P is described herein along with thermosetting powder coating compositions (PCC A) comprising a binder K, the binder K comprising the polyester resin P and a crosslinker X. The invention further relates to a cured PCC A. In addition, processes for making said PCC A and processes for coating an article with said PCC A are described as well as articles having coated thereon the PCC A and an articles having coated and cured thereon the PCC A.

The invention relates to a branched carboxylic acid functional polyester resin P as described herein. The invention further relates to a thermosetting powder coating composition (PCC A) comprising a binder K, said binder K comprising the P and a crosslinker X. The invention further relates to a cured PCC A. The invention further relates to a process for making said PCC A and processes for coating an article with said PCC A. The invention further relates to an article having coated thereon said PCC A as well as to an article having coated and cured thereon said PCC A. The invention further relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of the thermosetting powder coating composition A (PCC A) with a separate, distinct thermosetting powder coating composition A1 (PCC A1). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B. The invention further relates to a cured PCC B. The invention further relates to an article having coated thereon said thermosetting powder coating composition B as well as to an article having coated and cured thereon said thermosetting powder coating composition B. The invention further relates to use of: the polyester resin P, the PCC A, the cured PCC A, the PCC B, the cured PCC B, articles coated with the PCC A, articles coated with the PCC B, articles having coated and cured thereon the PCC A, articles having coated and cured thereon the PCC B. The invention further relates to the use of the polyester resin P for matt powder coatings. The invention further relates to the use of the PCC B for matt powder coatings.

The invention relates to a branched carboxylic acid functional polyester resin P as described herein. The invention further relates to a thermosetting powder coating composition (PCC A) comprising a binder K, said binder K comprising the P and a crosslinker X. The invention further relates to a cured PCC A. The invention further relates to a process for making said PCC A and processes for coating an article with said PCC A. The invention further relates to an article having coated thereon said PCC A as well as to an article having coated and cured thereon said PCC A. The invention further relates to a thermosetting powder coating composition B (PCC B) comprising a physical mixture of the thermosetting powder coating composition A (PCC A) with a separate, distinct thermosetting powder coating composition A1 (PCC A1). The invention further relates to a process for making said thermosetting powder coating composition B and processes for coating an article with said PCC B. The invention further relates to a cured PCC B. The invention further relates to an article having coated thereon said thermosetting powder coating composition B as well as to an article having coated and cured thereon said thermosetting powder coating composition B. The invention further relates to use of: the polyester resin P, the PCC A, the cured PCC A, the PCC B, the cured PCC B, articles coated with the PCC A, articles coated with the PCC B, articles having coated and cured thereon the PCC A, articles having coated and cured thereon the PCC B. The invention further relates to the use of the polyester resin P for matt powder coatings. The invention further relates to the use of the PCC B for matt powder coatings.

Polymers are provided which are formed of at least one unit selected from the group consisting of the following units S1 and S2:

##STR00001##

wherein X and Y are substituents as defined in the specification and k and m are integers as defined in the specification.

Polymers are provided which are formed of at least one unit selected from the group consisting of the following units S1 and S2:

##STR00001##

wherein X and Y are substituents as defined in the specification and k and m are integers as defined in the specification.

A coated polymer film, such as a coated polyester film, is disclosed. In one embodiment, the coated film may be used as a substrate for digital printing. In one embodiment, the coating contains an anionic anti-static agent comprising a sulphonated copolyester resin. In an alternative embodiment, the coating contains an anti-static agent comprising an organometallic, such as an organo zirconate, in combination with metal oxide particles. The metal oxide particles may comprise nanoparticles. In one embodiment, the coating can further contain a print enhancing agent and an adhesion promoter.

A coated polymer film, such as a coated polyester film, is disclosed. In one embodiment, the coated film may be used as a substrate for digital printing. In one embodiment, the coating contains an anionic anti-static agent comprising a sulphonated copolyester resin. In an alternative embodiment, the coating contains an anti-static agent comprising an organometallic, such as an organo zirconate, in combination with metal oxide particles. The metal oxide particles may comprise nanoparticles. In one embodiment, the coating can further contain a print enhancing agent and an adhesion promoter.